I live on the island Trinidad and Tobago in the Caribbean, and I was a bit worried about the sunflowers growing properly as we have very heavy clay soil and extreme sun at times, but to my surprise... these were sewed into the ground and grew and performed beautifully. These were the biggest sunflowers I have ever seen grown from seed in my country. I will be buying much more of these and trying other varieties. This sunflower was seen from every angle of the garden and I cant wait to grow more.